Die for lining bearings



Nov. 20 1923.

F. GERHARDT DIE FOR LIN ING BEARINGS Filed Oct. 14

2 Sheets-Sheet 1 INVEN TOR. Mederwk flew/dank BY; g M

A T? RNEY IIAWJ'YE Nov. 20 1923.

F. GERHARDT DIE 1 0R mums BEARINGS Filed Oct. 14 1920 2 Sheets-Sheet 2INVENTJR. fierek :Z'emkwmzl BY M QWMMIL .Fiy4.

ATTORNEY Patented Nev. 2% i92 :1 "Law" 3 0 FREDERICK GERHARIDT, (3F SANFRANCISCO, CALIFGE-NIA.

DIE FOB LINING BEARINGS.

Application filed October 14, 1920.

T 0 all whom it may concern Be it known that I, FREDERICK GE HARDT, acitizen of the United States, residing at San Francisco, in the countyof San Fran cisco and State of California, have invented new and usefulImprovements in Dies for Lining Bearings, of which the following is aspecification.

This invention relates to devices for lining bearings and has for itsobject to simplify and improve the construction and operation thereof.

The present device is especially adapted for use in lining connectingrod bearings of internal combustion engines, and comprises a stationarydie and a movable die disposed on vertical axes, between which a bearingmember is clamped and into which molten metal, such as Babbitt or whitemetal, may be poured, the die being so shaped as to cause the moltenmetal to set evenly around the interior of the bearing member. Thedevice also includes means operated by the opening of the movable die tocause the bearing member to be thrust away and released from thestationary die in a way to avoid injury to the lining.

Cne form which my invention may assume is exemplified in the followingdescription and illustrated in the accompanying drawings, in which- Fig.1 shows a plan View of a device embodying my invention,

Fig. 2 shows a front elevation of the same with the movable die memberopen,

Fig. 3 shows a plan view of the device with the die member closed, and

Fig. 4 shows a sectional'view on the line 4-4, Fig. 3.

In the form herein shown I employ standards 10 between which is fixed aframe bar 11, such bar detachably receiving a male die 12 by means ofbolts 13. This die, it will be noted, is disposed with its axisvertically and at each side thereof is a knock-out pin 14 slidablyreceived in the frame bar. Each knock-out pin has a flange 15 near itsfor ward end and is normally held retracted by means of a coil spring16. These pins are spaced so that the bolt openings in the bearingmember A registers therewith, whereby to properly position the bearingmember upon the male die.

A swinging member 17 is mounted on the frame bar by means of a verticalhinge pin 18 and has formed near its end a female die Serial No.416,866.

19 to fit against the back side of the bearing member A and clamp thelatter in place against the male die. This swinging member is cut awayat 20 to allow the projecting parts on the back of the bearing member,as for instance an oil dip or connecting rod to extend through.

I provide suitable means to lock the die members together, such forinstance as a handle 20 having a notch 22 to cooperate with a lug 23 onthe frame bar. The hinged end of the swinging member cooperates with aplunger 24 slidably mounted in the frame bar, and this plunger in turnengages with the ends of a pair of levers 25 which are fulcrumecl at 26upon the frame bar and have their opposite ends co-acting with theknock-out pins 14.

In the operation of the device the dies are opened and the bearingmember is placed against the stationary die and held temporarily inplace by the projecting ends of the knock-out pins 14:. The swingingmember is then closed and locked in place and thereafter the moltenmetal is poured. To admit the metal the meeting faces of the dies at theupper side are grooved, as shown at 27 in Fig. at. The dies are soshaped as to allow the metal to fill in evenly around the interior ofthe bearing and form a flange 28 at each side thereof. lVherever desiredthe male die can be provided with ridges 29 whereby to form oil groovesin the lining. After the metal is poured and sufficiently set the diesare unlocked and the movable members swung outwardly. Being at theextreme end of a long arm the path of movement taken by the female dieis such as to permit withdrawal without any danger of disturbing theposition of the bearing member. When the movable member nears the limitof its opening movement it strikes the plunger 24. and causes theknock-out pins to thrust the bearing member away from the male die. Themovement of the bearing member away from the stationary die will beequal at both sides and therefore there is no danger of the liningbecoming muti lated or injured. A die as here shown is simple toconstruct and is easily operated. It permits a large number of bearingsto be poured in a short space of time and insures that the lining willbe properly and evenly formed, and wherever necessary provides for theformation of oil ducts or grooves in the lining. With a device of thischarflanges of the bearing-half to support the same, an inner die memberspaced from the ends andinner circumference of the bearinghalf, an outerdie member to engage the bearing-half and clamp the same in place, saidouter die member co-operating with the inner die member to enclose aspace at each end ofthe bearing-half for the fillet.

2. Adevice for forming a lining fora connecting rod-bearing comprisinglugs to enter the bolt openings in the flanges of the bearing-half tosupport and position the latter, an inner die member around which thebearing-half fits, a swinging outer die member engageable with theexterior of the bearing-half to clamp the same in place and meansactuated by the withdrawal of the outer (llQ l-IllllbQl and engageablewith said lugs to cause the lugs to thrust the bearinghalf away from theinner die member.

3. A device for forming a lining and fillet in a connecting rod bearing,comprising lugs to enter the-bolt holes in the flanges of thebearing-half to support and position thesame, an inner die member spacedfrom the ends and inner circumference of the bearing-half, ahorizontally swinging outer die member'to engage the bearing-half, andto co-operate with the inner die member to enclose a space for thefillet, clamping means to retain the outer die member in place and meansactuated by withdrawal of the outer die member and engageable with saidlugs to cause the lugs to thrust the bearing-half away from the innerdie member.

4;. A device for lining connecting rod bearings, comprising a frame,lugs slidably mounted in the frame in position to enter bolt openings inthe flanges of the bearinghalf, an inner die member fixed to the frameand around which the bearing-half fits, an arm hinged to the frame andcarrying an outer die member to co-operate with the inner member andclamp the bearing-half in place, and means actuated by outward movementof the hinged arm and in engagement with said lugs to depress the lugsand thereby thrust the bearing-half away from the inner die member.

5. A device for use in lining bearing halves comprising a frameincluding a transverse bar, an inner die secured to one of the sidefaces of said bar, aplurality of horizontally disposed lugs slidablymounted on said bar and projecting therethrough to enter the bolt holesin the bearing half to support and position the latter, a horizontallyswinging outer die hinged to said bar to engage the bearing half andclamp it in position relative to the inner die, pivoted levers connectedto said lugs, and a member connected with said levers and adapted to beengaged by the outer die when the latter is swung outwardly whereby thelevers will be actuated to depress the lugs to disengage the bearinghalf fromthe inner die. I

6. The combination as set forth in claim 5 including means for lockingthe outer die in closed position.

FREDERICK GERHARDT.

